The classic signs and symptoms of pellagra include

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Pellagra is a disease caused by niacin deficiency, which presents with the classic symptoms of dermatitis, dementia, and diarrhea (the three D's). The dermatitis typically affects areas exposed to sunlight and may be scaly, thickened, and discolored. Night blindness is a symptom of vitamin A deficiency, heartburn is not a specific symptom of any nutritional deficiency, and weak bones are a symptom of calcium and/or vitamin D deficiency.

The Classic Signs and Symptoms of Pellagra Include